WhatsApp payments live in India: How to send and receive money
By: Team Ifairer | Posted: 11-02-2018
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Now to send money, go to a chat with any person, even in a group chat. Tap on the + symbol for attachments and you will see Payments. If the other person has Payments enabled, the feature will work. In a group chat users can choose an individual member of the group to whom they wish to send the money. If the other user does not have WhatsApp Payments, the app will alert you of the same. The other user will need to activate Payments as well.
Source: indianexpress.com